Question
Ihave a bamboo orchid bulbs and how deep a pot do I need to plant them in?

Answer
Ralph, Plant these about one inch apart and about one inch deep.  You can judge the size of the pot based upon this and the number of bulbs you have. If you have just one bulb you will need a pot no more than 2 inches in diameter. Keep in mind that potting mix in a pot this size will dry out rather quickly so you may need to water at least every other day in a well drained pot.  Do not let the pot sit in water.